Who this is for — Traders who want to size risk professionally without exposing their entire net worth to trading swings.
Operating capital is the portion of resources you accept putting at risk according to your plan. It must be clearly distinct from reserve capital and personal liquidity, so decision-making stays consistent even through negative phases.
In plain terms — Not everything you own is capital to trade. Operating capital is only the portion built to withstand volatility and drawdown.
How to define it robustly
A correct definition protects both strategy and psychological endurance. Link to position sizing and capital allocation.
- Set a maximum allocable amount and do not exceed it.
- Link size and risk per trade to the real operating account size.
- Review periodically based on performance and business plan objectives.
Typical mistake — Treating your entire net worth as "ammunition" or increasing operating capital after a few positive months.
Example — You have $100k total but only $40k operating, $40k reserve, and $20k external cash. When drawdown arrives, you keep following the plan without raising risk to recover quickly.
Summary card
- What it is: capital dedicated exclusively to active trading.
- What changes: sizing consistent with real risk tolerance.
- Quick check: explicit separation from reserve and personal expenses.
Gold path — Professionalisation module. Index: Gold path.